Clock



2 Sheets-Sheet 1.

(Model.)

0. STAHLBERG.

TWENTY-FOUR HOUR STRIKING CLOCK.

Patented June 22, 1886.

INVENTOR @441 WITNESSES ATTORNEY N PETERS, PhntmLilhogripMr. wmm wn, D. c.

2 Sheets-Sheet 2.

C. STAHLBERG.

TWENTY-FOUR HOUR STRIKING 01.0011.

(Mode1.)

Patented June 22 UNITED STATES PATENT OErroE.

CHARLES STAHLBERG, OF \VATERBURY, CONNECTICUT, ASSIGNOR TO THE VATERBURY CLOCK COMPANY, OF SAME PLACE.

TWENTY-FOUR-HOUR STRIKING CLOCK.

SPECIFICATION forming part of Letters Patent No. 344,209, dated June 22, 1886,

Application filed April 24, 1885. Serial No. 168,276. (Modehl T aZZ whom, it may concern: stop-notch, N, and controlled through its rack Be it known that 1, CHARLES STAHLBERG, arm O by an interval-cam, P, located in the residing at \Vaterbury, in the county of New time-train and arranged to be revolved once Haven and State of Connecticut, have invented in twenty-fourhou rs, and having its periphery certain new and useful ImprovementsinStrikdivided into three steps, Q, It, and S, respecting Mechanisms for Twenty Four Hour ively representing the hours from 1 to 9, in- Cloeks; and I do declare the following to be a elusive, from to 19, inclusive, and from full, clear, and exact description of the same, through the remaining hours of the day. The reference beinghad totheaecompanyingdrawsaid arm G is adapted to engage with a lift- 1 ings, which form a part of this specification. cam, T, provided with two short slots, U, and

My invention relates to an improvement in located in the striking-train ofthe clock. The striking mechanism for twcnty-four-hour said interval rack M is operated in conjuncclocks, the object being to produce improved tion with a striking-rack, V, provided with means for striking or signaling standard time an arm, \V, engaging with a striking-cam, X,

[5 digitately. located in the time train and arranged to be 6 \Vith this end in view my invention conrevolved once in twenty-four hours, and havsists in means for temporarily holding the ing its periphery divided into three steps, Y, hammer against impact with its bell or gong Z, and A, respectively corresponding to the without stopping the strikingtrain, and thus steps Q, It, and S of the interval-cam, and pro- 2 producing the interval required for digital vided for each of the several hours with teeth signalin B, laid out to permit the striking-rack to drop,

My invention further consists in certain deunder the control of the rack-arm, a number tails of construction, as will be hereinafter deof teeth corresponding to the nu mber ofstrokes' scribed, and pointed out in the claims. to be given for the several hours, with an ad-' 25 In the accompanying drawings, Figure 1 ditional tooth for the interval, where occuris aperspective view of a clock embodying my ring. The said interval and striking racks invention. Fig. 2 is a detached view of the are connected with the strikingtrain throughf striking-cam. Fig. 3 is an enlarged section a gathering-pallet, C, and a rack-dctent, D, on line 3 3, Fig. 1, lookingiu the direction of as shown. 7 j,

30 the arrows adjacent to said line. Fig. 4. is an Having fully described mechanism forcarry So enlarged detail view of the interval and striking out my invention,lwill proceed to set forth ing racks and adjacent parts, and Figs. 5 and the operation of such mechanism. In warning 6 show said racks in different positions. for all of the hours, the interval and striking As herein shown, the lift-armA of the hamracks M and V respectively drop together, mer B is provided with an extension, C, which and subsequently and during striking they are vibrates in the range of a hammer-detent, D, raised together by the gathering-pallet C. carried by an arbor, E, also carrying arms F During the hours one to nine, inclusive, the and G, the said arbor and its attachments forminterval lock-work is kept in retirement by ing interval lock-work, which is thrown, forthe engagement of the arm F thereof with the 40 ward and downward, when released, by a incline J, which is prevented trom being caro spring, H, encircling the arbor. An auxiliary ried beyond the range of the said arm F when hammer, I, carried by the arbor, operates in the interval-rack M is dropped in warning by conjunction with the hammer B in the prothe interval-cam 1?, with the step Q, of which duetion of a ding-dong effect. The said arm the arm 0 of the said intervalrack M engages 5 F is adapted to engage with anincline, J, produring the period mentioned. The interval vided at its edge with surfaces K and L, the lock-work being retired during the hours resurfaeeLbeing eccentric to the center of moveferred to, they are signaled in the usual man ment of the said block or incline J ,and the surnor by simple strokes of the hammer B upon face K concentric therewith. The inclineJ is its bell or gong. In warning for the tenth 50 located upon an interval-rack, M, having a hour, the interval-rack M is dropped farther. ioo

than during .the preceding hours, owing 'to the fallingof its arm 0 into the=step R, and hence nearer the center of the interval-cam 1, and the incline J is carried beyond the range of the arm-F of the interval lock-work, which, however, is still supported in retirement by its arm G, which-isat this time engaged with the periphery ofthe cam T, located in the" striking-train. When the train is released for striking, the said cam T is rotated and one of the slots U is brought under the-said arm G, l

while, and during the performance referred to, the cam T has rotated andlifted the arm G- to its periphery, whereby the interval lockwork is again elevated and the gathering-pallet O has rotated and lifted the striking and interval racks M and V, respectively, and brought the surface-L of the incline J under the armF,so that when the succeeding slot in the ram T is brought into range with the arm Grand the' interval lock-work released it w is caught by the engagement of the arm F with the surface L ofthe incline J, and the hammer-detent is brought into range with the ex-- tension 0 of the lift-arm A of the main hammer B, whereby the said extension engages with the detent -D and holds the hammer B from striking without arresting the striking-v train, which is stopped by the falling of the rack detent D" into the stop: notch N of the i nterval ra'ck M, and the train isarrested with the main hammer B held by the hammer-de-' tent D. Thus the signal for the tenth hour consists of a single ding-dongstroke. \Vhen the'train warns for the eleventh hour, the cam'T is. rotated for carrying that-one of its' slots which was left under the arm G when' the train was stopped beyond'th'e' range of such arm G, so that when the striking and interval racks M' and V, respectively, are dropped the support of the interval lock workis shifted from theincline J to the lifting-cam T, and the lock workis'sustained in the position in which it'was leftafter sig-.- naling the tenth houi'. Then, at the-begin ning of the striking action, the lifting-cam T isrot'ated again to bring its succeeding slot with in therange of the arm G, permitting the-interval lock-work to be thrown fo'rward'and downward,"-whereby the extension 0' of the main hammer B is released, andthe said hammer B followstheauxiliary'hammer I in strik-j ing,and a ding-dong effect-is produced. Mean? while the interval-rack Mhas been raised by" the'gathering-pal'let G", with the striking-rack V'and the surface L of the incline "J brought under the arm 'F,so that when the interval lock-work is again released for being thrown forward it is caught by the engagement of the arm F with the surface L of thei-neline J, (see Fig. 5,) and the hammer-detent D is brought into the range of the extension 0 of the liftarm of the main hammer B, whereby the said extension 0 engages with the detent D and holds the-hammerBgwithout, however, arrestingathe striking-train, which meanwhile operates to lift the interval and striking racks M and V, respectively, and brings the surface K of theincline J under the arm F, so that when the interval lock-work is again released it is caught by the engagement of the arm F with the surface Kof the-said incline J, (see Fig. 6,).whereby the interval lock-work is retired I by the supporting of the detent D above and without the range of the extension 0 of the 1ift-arn1 A ofthe main hammer B, which strikes alone Thus it will be seen that the eleventh hour is signaled'by a ding-dong stroke, followed by an interval succeeded by a single blow, and the hoursto and including nineteen are signaled digitatel y and in the same way bya ding-dongstroke succeeded by an interval followed by two, three, four, five, six,seven, eight, and-nine simple strokes.

In warning for the twentieth hour the rack-arm- O'of the interval-rack M falls into the step S of the interval-cam 1, and permits the rack to drop and-carry the incline J suffieiently far beyond the range of the arm F to permit two ding-dong strokes to be given before the gathering-pallet C, by raising the interval-rack M, brings the surface L of the incline J under the saidarm F. When the interval lock-work is for the third time released in striking the twentieth hour, it will be caught by the en'- gagement of the said arm F with the said surface L, and the hammer-detent D brought into the range of the extension of the lift-arm A of the main hammer B, whereby the said extension O'will engage with the said detent Dand hold the said hammer B without stop-,

ping the train, which will bearrested by the falling 'of the rack-detent D into the stopnotch N ofthe interval-rack M, and the train will be stopped with the main hain mer B held by the hammer-detent D. Thus the twentieth The phases detailed-for si gnalin g the eleventh hour are repeated for signaling the twentyfirst'hour, exceptthat in the latter 'case two ding-dong strokes precede the interval, "and theremain'ing hours of the day are signaled bytwodin'g-do'ng strokes-followed by an interval and succeeded by two, three, andfou'r simple strokes.

" My invention comprehends,broadly, mejch anism'for temporarily holding a hammer between its strokesagainst impact with 'itsbell or-gong, for the production of the-interval required in "digital 'str'ikingiwithout stopping the striking-train audit is apparent-that the mechanism herein shown for the purposeniay be modified and altered.

If desired, the auxiliary hammer may-be dispensedwith and other'means than the'dingdong employed for distinguishing the hours. Thus the hours one to ten, inclusive, may be struck in the usual manner, then from eleven to nineteen, inclusive, with the interval, and from and including twenty through the remaining hours with the interval, and with or without some particular signal for distinguishing the twentieth and second hours. I would therefore have it understood that I do not limit myself to the exact construction shown and described, but hold myself at liberty to make such changes and alterations as fairly fall with in the spirit and scope of my invention.

I am aware that standard time has been struck digitately by means of two independently-operated hammers. I do not, therefore, broadly claim striking standard time digitately, or, in other words, by the use of pauses, but only striking standard time digitately by the use of a single hammer, which is temporarily held between its strokes against impact with its bell or gong, for the production of an interval without stopping the striking-train.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. Striking mechanism for twenty-four-hour clocks, having interval mechanism for temporarily holding the hammer between its strokes without stopping the striking-train, substantially as set forth.

2. Striking mechanism for twenty-fou r-hour clocks, having a hammer-detent and mechanism for operating it in temporarily holding the hammer between its strokes without stopping the striking-train, substantially as set forth.

3. Striking mechanism for twenty-four-hou r clocks, having a hammer-detent and interval and lifting cams for operating it in temporarily holding the hammer between its strokes without stopping the striking-train, substan' tially as set forth.

4. Striking mechanism for twenty-four-hour clocks, having an interval-cam located in the time-train, an interval-rack provided with an incline and connected with the said cam and the striking-train, a lifting-cam located in the striking-train, and a hammer-detent operated through the said cams in temporarily holding the hammer without stopping the strikingtrain, substantially as set forth.

5. Striking mechanism fortwenty-four-hour clocks, having an interval-cam located in the time-train, an interval-rack provided with an incline and a stop notch and connected with theinterval-cam,astriking-cam locatedin the time-train, a striking-rack connected with the striking-cam, connections with the striking-train for operating the racks, alifting-cam located in the striking-train, and interval lockwork including arms engaging with the incline and lifting cams, respectively, and a hammerdetent for temporarily holding the hammer without stopping the striking-train, substantially as set forth.

6. Striking mechanism for twenty-four-hour clocks, having interval mechanism for temporarily holding the hammer without stopping the striking-train, the said mechanism including an interval-cam having its periphery divided into three steps,substantially as set forth.

7. Striking mechanism for twenty-four-hour clocks, having interval mechanism for temporarily holding the hammer without stopping the striking-train, the said mechanism including a striking-cam adapted to drop a rack connected with the said rack, having a number of teeth corresponding to the number of strokes to be given, with an additional tooth for the interval during which the hammer is held, substantially as set forth.

8. Striking mechanism for twenty-four-hour clocks, having an extension connected with the lift-arm of the hammer, a hammer-detent for engaging with such extension for temporarily holding the hammer without stopping the train, and means for operating the detent, substantially as set forth.

9. Striking mechanism for twenty-four-hour clocks, having interval mechanism for temporarily holding the hammer between its strokes without stopping the striking-train, and an auxiliary hammer connected with the interval mechanism and cooperating with the main hammer in producing a ding-dong effect, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CHAS. STAHLBERG.

Vitnesses:

AROHIBALD BANNATYNE, EDWARD H. ROGERS. 

